Quick prototype of how switch to an icon during pickup makes the rendering bug go away and also looks better visually.

assets/config.json

@@ -80,6 +80,11 @@
       "frame_width": 256,
       "frame_height": 256
     },
+    "torch_horizontal_floor_ICON":
+    {"path": "assets/icons/torch_crappy_ICON.png",
+      "frame_width": 128,
+      "frame_height": 128
+    },
     "peasant_girl":
     {"path": "assets/sprites/peasant_girl_2.png",
       "frame_width": 256,
@@ -95,6 +100,11 @@
       "frame_width": 256,
       "frame_height": 256
     },
+    "healing_potion_small_ICON":
+    {"path": "assets/icons/healing_potion_small_ICON.png",
+      "frame_width": 128,
+      "frame_height": 128
+    },
     "well_down":
     {"path": "assets/sprites/well_down.png",
       "frame_width": 256,

gui/loot_ui.cpp

@@ -75,7 +75,7 @@ namespace gui {
         dbc::check($level.world->has<components::Sprite>(item),
             "item in inventory UI doesn't exist in world. New level?");
         auto& sprite = $level.world->get<components::Sprite>(item);
-        $gui.set_init<guecs::Sprite>(id, {sprite.name});
+        $gui.set_init<guecs::Sprite>(id, {fmt::format("{}_ICON", sprite.name)});
 
         guecs::GrabSource grabber{
             item, [&, id]() { return remove_slot(id); }};

gui/status_ui.cpp

@@ -80,7 +80,7 @@ namespace gui {
       auto gui_id = $gui.entity(slot);
 
       auto& sprite = $level.world->get<components::Sprite>(world_entity);
-      $gui.set_init<guecs::Sprite>(gui_id, {sprite.name});
+      $gui.set_init<guecs::Sprite>(gui_id, {fmt::format("{}_ICON", sprite.name)});
       guecs::GrabSource grabber{ world_entity,
           [&, gui_id]() { return remove_slot(gui_id); }};
       grabber.setSprite($gui, gui_id);